GE VersaMax IC200PWR001 User Manual page 459

Mixed Module, 24 V DC Positive Logic Input 20 Points / Output 12 Point /
(4) High-speed Counter, PWM, or Pulse Train Configurable Points
Stop Ramp with Deceleration
The graphics below show how stopping a Ramp early affects the Ramp output if
the output is configured for deceleration. The example on the left shows what
happens when the Enable Bit is set OFF during the "at velocity" part of the
output. The right example shows the impact when the Enable Bit is set OFF
during the "ramp up" part of the output.
If the Ramp output is already decelerating when the Enable Output bit
transitions from On to Off, there is no change to the operation of the Pulse Train
output.
Configuration
When the module powers up or receives a new configuration, it automatically
sets up all Ramp channels to decelerate when the Output Enable bit goes OFF.
If a Ramp output should stop immediately, the channel can be reconfigured with
a Data command or a COMREQ. The data block is the same for both:
Command word
Data word (LSW)
Data word (MSW)
"0n" is the channel number from 1 to 4.
"3B" is the command (in hexadecimal): Load Stop Mode
"dddd" is the Stop Mode parameter. It can be "1" for Decelerate and "2" for
Stop Immediately. If any other value is specified, error code 13 (hex) is
placed in the Module Status Word.
GFK-1504N Chapter 13 Mixed Discrete/High-Speed Counter Module
Time
MSB
0n
dddd
Always zero
IC200MDD841
Time
LSB
3B
13
13-19